Honestly I will be biased because of my own personal good experience with the Mantis, and mixed experiences with my Apollo.
The Segway is still not finalized, and has no longer term test. However Segway does make quality products, These new scooters do have a high level of "cool’ factor as well. Searching for just the right scooter is hard, just as soon as you hit the buy button the next day some random video will pop up giving you buyers remorse. You just got to make a decision at some point and be happy with your choice.
I would like to test drive that new Mantis GT pro just for fun one day. But will it be a $2000.00 scooter or one quite a bit more from what i have seen it listed for on some dealer websites US$3250.00). The Emove cruiser seems to be a quality product at a good price point as well. It seems to be the one scooter that takes some rain exposure too in real world reviewing, which seems to be important in his wish list.